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RadAjaxManager Exception Error

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Kai
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Kai asked on 04 Sep 2009, 06:28 PM
I currently have on my page a RadSplitter control.  On the left side of the splitter, I have a RadTreeView, and on the right side I have a RadGrid.  I've added the RadAjaxManager to update the RadGrid when a folder is clicked on in the RadTreeView.  The problem I'm getting is that I keep getting a Javascript popup error everyonce in a while when I go to click on a folder in the tree view to load up information into the RadGrid.  The RadGrid appears to be loading, but then stops once this error pops up.  Now if I go and click on another folder after I get this Javascript popup error, everything works fine.

Like I said, I only get this error every once in a while.  I've looked at the other posts in this forum and tried all different things.  None of them really solved my issue.

Here is what I'm getting in the Javascript error popup.

Sys.WebForms.PageRequestManagerPraserErrorException: The message received from the server could not be parsed.  Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near 'play:none;"></span>|<html>
     <head>
'.

Kai Thao

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Pavlina
Telerik team
answered on 07 Sep 2009, 08:45 AM
Hello Kai,

To avoid this problem, please refer to the following link that elaborates on this generic ASP.NET AJAX framework error:
Sys.WebForms.PageRequestManagerParserErrorException - what it is and how to avoid it
Firewalls breaking ASP.NET AJAX!

I hope this information helps.

Regards,
Pavlina
the Telerik team

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Kai
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Pavlina
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